reeder



4 Sheets-Sheet -1.

(No Model.) v

W. S. REEDER. BELT TIGHTENBR POR COTTON GTNS.

No. 437,241. Patented Sept.v 30, 1890.

' (No Model.) f I 4 sheets-sheet 2.

W. S. REEDBR. BELT TIGHTENER POR GOTTGN GINS.

Patented Sept. 30, 1890.

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(No Model.) 4 Sheets--Sheet 3.

W. S. RBEDBR.

BELT TIGHTENER FOR COTTON ems. No. 437,241. Patented Sept. 30, 1890.

Eem O 4 Sheets--Sheet 4.

(No Model.)

W. S. REBDER. BELT TIGHTBNER PoR ooTToN ems.

No. 437,241. Patented Sept. 30, 1890.

UNITED STATES PATENT OFFICE.

WILLIAM S. REEDER, OF ST. LOUIS, MISSOURI, ASSIGNOR TO THE KINGS- LAND it DOUGLAS MANUFACTURING COMPANY, OF SAME PLACE.

BELT-TIGHTENER FOR COTTON-GINS.

SPECIFICATION forming part of Letters Patent No. 437,241, dated September 30, 1890.

' Application filed September 26, 1887. Serial No. 250,711. (No model.)

VTighteners for Ootton-Gins, of which the following is such a full, clear, and exact description as will enable any one skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specification.

, My invention relates to an improvement in cotton-gins of the Whitney type, the object of the same being to improve a. certain special feature of such gins.

The invention will be best understood by referring to the accompanying drawings, in

which- Fgure I is an end elevation of a Whitney cotton-gin having my improvement applied thereto. Fig. II is a side elevation thereof.

Fig. III is an end elevation, the saine as Fig. I, with a portion of the apparatus removed, and IV an isometric projection of the tightener-pulley frame to which my invention relates.

The same letters of reference refer to the same parts throughout the several figures of the drawings.

F is a roller that bears upon the condenser in the ordinary way.

The power that drives the machine is applied to a pulley T, Fig. II, which rotates the shaft K, passing through the same, and carrying the saws. Upon the shaft K to one side of the machine, Figs. I and II, is a sprocketwheel X, over which passes a sprocket-chain or link-belt M4 to another sprocket-wheel N of larger diameter mounted upon a shaft O, upon which is av small sprocketwheel W, which drives a second sprocket-chain M', that passes around another sprocket-wheel M of larger diameter fast to the condenser-shaft L. A tightening-pulley o, carried by the frame of the gin, is provided to keep the sprocketchain taut. The gearing described reduces the speed of the condenser and imparts a positive motion thereto.

lc k (see Fig. II) are rods at each side of the apparatus by which the mote-board is adjusted. These rods are provided 0n their outer ends with thumb-nuts m, by which they are manipulated.

His the breast or seed board, which carries the grate U. The seed-board or breast H and the grate U may be raised and lowered in position again by suitable means. This means in the present insta-nce consists of a shaft ct, journaled in metal pieces fastened to the lower part of the seed-board, a curved arm l), fast to one end of said shaft, adapted to bear against a fixed part of the gin, and a handle c, extending from the opposite end of the shaft, which handle is within easy grasp of the ginner. (See Fig. II.)

The parts above enumerated make no part of my invention.

Q is a double-anged pulley placed upon the brush-shaft I. This double-anged pulley is driven by a belt from a large pulley P on the brush-shaft K. (See Figs. I and III.) The belt has atightening or idle pulley R, mounted on a shaft S, carried bya frame swiveled upon a shaft h, journaled in a box supported by the frame of the machine. These features are duplicated at each end of the machine, as shown in Fig. II, so as to drive the brush-cylinder shaft at each end. The idler or tightening pulley frame is shown more clearly in Fig. IV. It has a spring CZ bolted to the sill of the machine, which spring is connected to the yoke f g g of said frame by a temper-screw e, which regulates the tension vof the drivingbelt as the screw is manipulated in one or the other direction. The yoke is connected to two arms c' t', which sustain the shaft S, and arethemselves fast to the shaft h. The effect of the double-flanged pulley is to guide the brush cylinder driving -belt. (See Fig. III, where it is represented broken away to more clearly illustrate the saine.) The driving-belt is apt at times from various causes to run crooked or to one side and rub against the arms i e' of the tightening-pulley frame, producing retarding friction, whereas with the double-hanged pulley the friction produced by thebeltrunning to one side becomes driving friction against the sides or flanges of said pulley. The pulley R not only acts as an idler but also as a tightener pulley to said belt, the tension of the belt being regulated by means of the temper-screw and spring IOO d, which latter is of great advantage, as it will yield readily yto any uneven places in the belt or pulleyeausediby any: imperfection in either or by the adhesion of any fereign substanee-sueh as lint, cotton, seed,dirt, or resin, (often used to prevent belts from slipping,`)--whlcl1 sometimes occur. Some ginners Weight the tightener or idle pulley frame to prevent the slipping of the lnush-belt. This, however, does not effect the desired result. The belt having a high speed, any unevenness in it or the pulley will causek the frame and Weight to bound upward and slacken the belt, eausingit to slip and perhaps run olf. Then the Weight again drops, it puts a sudden strain on the belt that is injurious to it. speed of the brush, which is objectionable, in

. that it will not produce se goed a rsample or t with a ratchet and pawl.

yield so great a quantityof lintper day: as an:

unvarying speed. Senne others use a trame This is also objectionable, because it is unyieldingandwill in-k jure the belt, andif there be any unevenness the belt will be proportionately ti ghi; and

Slack. My use of a spring for this purpose overcomes these difficulties, the saine perform- 111g a function which the foregoing will not.

I am not aware that a spring' and adoubleilange pulley with a spring-actuated tightener pulley have ever been employed as de-` scribed previous to my invention.

Having new fully set forth my invention, and described the advantages thereof, what I desire to claim, and secure by Letters Patent of the United States, is-A f f f f It also produces an irregularkk I ing from theouter ends el' the barst' ai, a spring l. ln a cotton-gin, the comblnation,witl1 the power-shaft pulley and b1-nslrshaft pulley, of' an idler-wheel, a belt connecting rthe powershaft pulley and idler-Wheel :and passing over rthe brush-shaft pulley, a supporting-frame for 2. In a cotton-gin, theeombination, with the power-shaft pulley andbrush-shaft pulley, of an idler-wheel, a belt connecting the powershaft pulley and idleruvheel and passing over the bruslrshalt pulley, a supportingd'rame tor` the idleruvheel having a horizontal rear bar t journaled in the frame of the gin, a crossbar S, upon which the idler-Wheel is mounted, sidefbars t', fi, a yoke swiveled to and dependeonneeted at one end to the sill of the giu,and an adj usting,` tension-bar connecting,r the other end ofi the spring tothe yole, substantially as described.

In testimony whereof rI rhave hereunto set my hand and: seal, this 2 lst day of September, 1887, in the presence of two subscribing Wit# nesses.

WILLIAM S.

nennen.; [L s.) r r 

